#503B7D
Closest named color: Dark Slate Blue (#483D8B). oklch(40.9% 0.108 295.9), rgb(80, 59, 125).
Aa
White text reads best on this color (9.28:1).
About this color
#503B7D is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.108 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.027 away. White text reads best on it, at 9.28:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.28:1 |
Values
| HEX | #503B7D |
| RGB | rgb(80, 59, 125) |
| HSL | hsl(259, 36%, 36%) |
| OKLCH | oklch(40.9% 0.108 295.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #503B7D | 9.28:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #503B7D | 2.26:1 | Fails | Lc 12.7 | Not readable |
| #503B7D text on white | 9.28:1 | AAA | Lc 91.2 | Preferred for body text |
| #503B7D text on black | 2.26:1 | Fails | Lc -11.1 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE8F5
oklch(93.7% 0.018 296.6)
-
Step 200
200
#DBD5EE
oklch(88.5% 0.035 296.7)
-
Step 300
300
#C4B9E5
oklch(80.9% 0.062 296.4)
-
Step 400
400
#A694D9
oklch(70.8% 0.101 295.7)
-
Step 500
500
#9178CE
oklch(63.2% 0.128 295.9)
-
Step 600
600
#7C5FBB
oklch(55.7% 0.14 296.1)
-
Step 700
700
#684EA1
oklch(49.1% 0.13 295.7)
-
Step 800
800 (this color)
#503B7D
oklch(40.9% 0.108 295.9)
-
Step 900
900
#463769
oklch(37.7% 0.084 295.9)
-
Step 950
950
#29203D
oklch(26.9% 0.054 296.9)
#503B7D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #22487F | 0.069 |
| Deuteranopia (no green cones) | #27467B | 0.064 |
| Tritanopia (no blue cones) | #464856 | 0.086 |
| Achromatopsia (no color) | #474747 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503B7D
#503B7D
oklch(40.9% 0.108 295.9)
- #485000
#485000
oklch(41% 0.094 116.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #503B7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.027
- Blueberry #464196 ΔE 0.045
- Twilight #4E518B ΔE 0.060
- Rebecca Purple #663399 ΔE 0.064
- Dusk #4E5481 ΔE 0.069
- Cobalt #1E488F ΔE 0.074
- Dusk Blue #26538D ΔE 0.081
- Twilight Blue #0A437A ΔE 0.084
Use #503B7D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.